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| author | lschyi <lschyi@google.com> | 2022-05-31 16:58:50 +0800 |
|---|---|---|
| committer | Chromeos LUCI <chromeos-scoped@luci-project-accounts.iam.gserviceaccount.com> | 2022-06-08 09:47:12 +0000 |
| commit | 15e11018d2c71a7424382837af65f1a309b38373 (patch) | |
| tree | 608671ef96d24bd4e7149dc7a2147129b646acb0 | |
| parent | fe0ba746225d89db6b4a6f1c011632748cff0b72 (diff) | |
| download | chrome-ec-15e11018d2c71a7424382837af65f1a309b38373.tar.gz | |
rt1718s: Implement set_sbu
The rt1718s can enable the SBU protection and control in the SBU_CTRL
register. Implement the set_sbu function to make projects set the SBU
line protection and function within the application.
BUG=b:208372205
TEST=manually test with inserting a type c display, then check the SBU
register is set enabled and external display is functioning.
BRANCH=none
Change-Id: I13f3881ddbb3b70f04e8ea88fcb51b1cf37fd517
Signed-off-by: lschyi <lschyi@google.com>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/3682600
Commit-Queue: Sung-Chi Li <lschyi@chromium.org>
Reviewed-by: Eric Yilun Lin <yllin@google.com>
Tested-by: Sung-Chi Li <lschyi@chromium.org>
| -rw-r--r-- | driver/tcpm/rt1718s.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/driver/tcpm/rt1718s.c b/driver/tcpm/rt1718s.c index d90e09805d..2dd28646b3 100644 --- a/driver/tcpm/rt1718s.c +++ b/driver/tcpm/rt1718s.c @@ -722,6 +722,22 @@ static int command_rt1718s_gpio(int argc, char **argv) } DECLARE_CONSOLE_COMMAND(rt1718s_gpio, command_rt1718s_gpio, "", "RT1718S GPIO"); +#ifdef CONFIG_USB_PD_TCPM_SBU +static int rt1718s_set_sbu(int port, bool enable) +{ + /* + * The `enable` here means to enable the SBU line (set 1) + * - true: connect SBU lines from outer to the host + * - false: isolate the SBU lines + */ + return rt1718s_update_bits8(port, RT1718S_RT2_SBU_CTRL_01, + RT1718S_RT2_SBU_CTRL_01_SBU_VIEN | + RT1718S_RT2_SBU_CTRL_01_SBU1_SWEN | + RT1718S_RT2_SBU_CTRL_01_SBU2_SWEN, + enable ? 0xFF : 0); +} +#endif + /* RT1718S is a TCPCI compatible port controller */ const struct tcpm_drv rt1718s_tcpm_drv = { .init = &rt1718s_init, @@ -758,6 +774,9 @@ const struct tcpm_drv rt1718s_tcpm_drv = { .set_frs_enable = &rt1718s_set_frs_enable, #endif .set_bist_test_mode = &tcpci_set_bist_test_mode, +#ifdef CONFIG_USB_PD_TCPM_SBU + .set_sbu = &rt1718s_set_sbu, +#endif }; const struct bc12_drv rt1718s_bc12_drv = { |